Rotary valve



2 Sheets-Sheet 1.

H. BROUSSEAU & G. PATTERSON.

ROTARY VALVE.

(No Model.)

No. 465.91 Patented D Ii; ure. 5'. WITNESSES INVENTORJ, W @mww Q53 yQL/[ DGLMJ L M W M ATTORNEY,

(No Model.) 2 Sheets-Sheet 2.

H. BROUSSEAU & G. PATTERSON.

ROTARY VALVE.

No. 465,917. Patentd Dec. 29, 18-91.

[T ure: 5. WlTNESSES: WW QINVENTORS'.

HARRY BROUSSEAU AND GILBERT PATTERSON, OF NEWBERRY, MICHIGAN.

UNITED STATES PATENT OFFICE.

ROTARY VALVE.

SPECIFICATION forming part of Letters-Patent No. 465,917, dated December29, 1891.

Application filed July 27, 1891. Serial No. 400,884. (No model.)

To aZZ whom it may concern:

Be it known that we, HARRY BROUSSEAU and GILBERT PATTERSON, citizens ofthe United States, residing at Newberry, in the county of Luce and Stateof Michigan, have invented certain new and useful Improvements in R0-tary Valves; and we do declare the following to be afull, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, and to the figures of referencemarked thereon, which form a part of this specification.

Our invention relates to rotary valves, its object being to provide avalve that will always wear to the seat and be balanced and easilyadjusted.

Figure 1 is a top View of the valve and steamchest. Fig. 2 shows the adjListing-screw and wedge; Fig. 3, outside view of steam-chest and crank;Fig. 4, sectional View of valve and steam-chest; Fig. 5, sectionalviewof frictionrollers.

1 isthe valve-post, having the case-harden ed steel shoe 5' resting oncase-hardened friction-rollers 11 in the foot-bearing 4.

2 2 is the live-steam port, and 3 3 the exhaust-port.

14. is the exhaust-cavity on one side of the valve-post; 13, thecounter-balance; 18, the counterbalance-seat; 17, the valve-seat, and 16the steam-chest.

15 is the upper journal with stuffing-box 12 and valve-spindle 10, ontowhich is connected the rock-arm 8.

9 is a bracket steadying the spindle 10.

19 19 is the inside of the steam-chest, and 21 the live-steam port.

6 is an adj Listing-wedge. Its shape is shown in Fig. 2, with theadjusting-screw 22 and connections viz., screw-holder 23, insidesteam-chest, and stuffing-box 20. It is evident that by turning thisscrew the wedge may be forced in or out, thus adjusting the seat, and byloosening the crank-arm the valve may be adjusted without opening thechest.

Fig. 4 shows the construction of the valveseat 17, andcounterbalance-seat 18, being of joint, and there being steam equally'atthe top and bottom of the valve-post there is little or no weight on therollers. By having two exhaust-ports the cavities can be made smaller,thus throwing less weight on the 0pposite side as the engine exhausts.

\Ve do not wish to confine ourselves to any special form ofconstruction, and therefore any change that comes withinordinarymechanical skill may be made without departing from the principle of ourinvention.

\Vhat we claim as new, and desire to secure by Letters Patent, is-

1. A rotary balanced valve consisting of the valve-post 1, resting uponfriction-rollers 11, the friction-rollers 11, the exhaust-cavities 1414, the counter-balance 13, the steamports 2 2, the exhaust 3 3,valve-seat 17, and counterbalance-seat 18, built on an incline to eachother from the top, substantially as specified.

2. An adj Listing-wedge for rotary balanced valves having its upper facestraight, its lower surface tapering from the head to the point, adaptedto be inserted under the foot-bearing of the valve-post, and providedwith the screw-bolt 22, screw-holder 23, and stuffingbox 20 foradjusting the wedge from the outside, substantially as described. 7

3. A rotary balanced valve consisting of I the valve-post 1, the shoe 5,the friction-rollers 11, the foot-bearing 4:, the exhaust-cavities 1414:, the steam-ports 2 2, exhaust 3 3, and valve-seat 17 andcounterbalance-seat 18, built on an incline to each other from the topand provided with the adjustingwedge 6 and screw-bolt 22, substantiallyas specified. 1

4. A rotary balanced valve provided with friction-rollers 11 under thevalve-post, made cone shape, the apex of the cone being toward thecenter, thereby preventing. the bearing wearing to a tight joint,substantially as described.

5. A rotary balanced valve consisting of the journal 15, valve-spindlel0, and rock-arm [o the valve-post 1, having the foot-shoe 5, the 8,substantially as specified.

friction-rollers 11 unclerthe foot-sh0e,thef0ot- In testimony whereof weaffix our signabearing 4, the counter-balance 13, the valvetures inpresence of two witnesses.

ports 14: 14, live-steam ports 2 2, exhaust 3, HARRY BROUSSEAU. thevalve-seat 17 and counterbalance-seat 1S, GILBERT PATTERSON. built on anincline to each other from the top, Witnesses:

the live-steam cavities 19 19 inside the chest, O. H. BAILEY,

the adjusting-wedge 6, the wedge-screw 22, JAS. BAILEY.

